Returns the current time when the file is compiled. With no arguments, the time will be
returned in the format of 08:37:48-06:00. However, if a $format string is provided,
the time will be printed according to that format. Valid formats are any valid format string
to Ruby's strftime function.

Returns the current date when the file is compiled. With no arguments, the date will be
returned in the format of 2013-05-13. However, if a $format string is provided,
the date will be printed according to that format. Valid formats are any valid format string
to Ruby's strftime function.

Returns the file name of the Sass file that initiated the compilation.
If the $absolute parameter is set to true, the full path of the stylesheet
will be returned, otherwise it will be relative to the project's Sass directory.
When the $absolute parameter is omitted, it defaults to false.

Returns the file name of the CSS file that is being generated.
If the $absolute parameter is set to true, the full path of the stylesheet
will be returned, otherwise it will be relative to the project's CSS
stylesheets directory. When the $absolute parameter is omitted, it
defaults to false.